Here's what rhymes with interquaternary.
marry merry ternary nary very ordinary vary fairy bury dairy ferry wary cherry hairy berry sherry tarry canary parry unwary harry tare barre terry faerie wherry customary coronary dietary urinary prairie honorary papillary scary cautionary remarry buffoonery legionary pessary apiary nondairy temporary arbitrary missionary monetary pulmonary capillary commentary dictionary hereditary imaginary solitary stationary adversary legendary pituitary visionary corollary dysentery mercenary sedentary seminary veterinary apothecary commissary emissary itinerary stationery centenary luminary aviary bacillary actuary equerry humeri lapidary bilberry elderberry tercentenary topiary plagiary uncustomary necessary military literary secondary monastery cemetery disciplinary momentary sanitary unitary ancillary budgetary estuary interdisciplinary planetary culinary fiduciary funerary mortuary obituary sanguinary statuary dignitary beriberi breviary diversionary cassowary dromedary chokecherry sectary contemporary extraordinary secretary preliminary unnecessary evolutionary sanctuary subsidiary involuntary judiciary maxillary pecuniary proprietary reactionary tributary discretionary salutary functionary savagery deflationary epistolary expeditionary interplanetary probationary supernumerary tutelary unsanitary concessionary huckleberry recessionary voluptuary bicentenary elocutionary nonliterary revolutionary vocabulary beneficiary fragmentary inflationary exclusionary confectionery expansionary genitourinary paramilitary insanitary nonmilitary geostationary nonhereditary multidisciplinary constabulary undersecretary eleemosynary cardiopulmonary counterrevolutionary Words that almost rhyme with interquaternary
belly allele jelly smelly deli telly underbelly vermicelli many messy heavy ready fairly rarely barely semi petty levy penny antennae heady levee medley unfairly jetty teddy bevy faery jenny kepi leggy recce sedgy veggie healthy steady wealthy deadly lengthy gentry unhealthy fleshy carefree sentry sexy sketchy spaghetti sweaty unsteady vestry belfry deathly gayety hefty machete confetti pebbly tempi testy breathy dressy pesky thready lefty wetly already directly especially twenty assembly scarcely elementary gently plenty epilepsy freshly immensely densely frenzy squarely deftly coquetry fleshly stealthy fidgety tensely trendy aplenty baronetcy libretti maidenly marquetry adeptly effendi ineptly friendly correctly complementary intensely intently unfriendly apoplexy halfpenny sullenly hostelry deviancy preciously woodenly indirectly incorrectly excellency complexly narcolepsy sacredly catalepsy reassembly penitently expressly confusedly equivalently grotesquely ambivalently cognoscenti circumspectly